General Description
The MAX9779 combines a stereo, 2.6W audio power amplifier and stereo DirectDrive™ 110mW headphone amplifier in a single device. The headphone amplifier uses Maxim’s patented DirectDrive architecture that produces a ground-referenced output from a single supply, eliminating the need for large DC-blocking capacitors, saving cost, space, and component height. A high 90dB PSRR and low 0.01% THD+N ensures clean, low-distortion amplification of the audio signal through the Class AB speaker amplifiers.

Features
♦ No DC-Blocking Capacitors Required—Provides Industry’s Most Compact Notebook Audio Solution
♦ PC2001 Compliant
♦ 5V Single-Supply Operation
♦ Class AB 2.6W Stereo BTL Speaker Amplifiers
♦ 110mW DirectDrive Headphone Amplifiers
♦ High 90dB PSRR
♦ Low-Power Shutdown Mode
♦ Industry-Leading Click-and-Pop Suppression
♦ Low 0.01% THD+N at 1kHz
♦ Short-Circuit and Thermal-Overload Protection
♦ Selectable Gain Settings (15dB, 16.5dB, 18dB, and 19.5dB)
♦ ±8kV ESD-Protected Headphone Driver Outputs
♦ Available in Space-Saving, Thermally Efficient Package
    28-Pin Thin QFN (5mm x 5mm x 0.8mm)

Applications
    Notebook PCs
    Flat-Panel TVs
    Tablet PCs
    Multimedia Monitors
    Portable DVD Players
    LCD Projectors